Dual-portrait-screen monitor



FIG. 1 is a front elevational view of a dual-portrait-screen monitor showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a top plane view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plane view thereof.

The broken lines are for the purpose of illustrating portions of the monitor and form no part of the claimed design. 

CLAIM The ornamental design for a dual-portrait-screen monitor, as shown and described. 